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7,629 extensions found in Web Development

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  • Characters Counter

    Characters Counter

    Find out how many characters there are in a selection by simply right-clicking it.

    Minkiu

    265 users

  • HTML Content Blocker

    HTML Content Blocker

    Blocks desired HTML contents (script, style, image, object, media)

    ilGur

    264 users

  • URL2QRCode

    URL2QRCode

    Converts Current URL to QRCode.

    Firefox user 13535997

    264 users

  • Open in Opera

    Open in Opera

    Open current page, link, or all tabs in the Opera browser.

    Andy Portmen

    262 users

  • Link Analyzer

    Link Analyzer

    Analyze the status of the links in a complete webpage or in selected text.

    damufo

    261 users

  • Responsive View Simulator

    Responsive View Simulator

    Seamlessly test website appearance on various mobile devices with this handy extension. Preview the responsive design in real-time.

    Buy Bulk Weed

    261 users

  • JS Injector

    JS Injector

    Inject JavaScript custom code into every webpage (e.g. to help with debugging).

    Francesco De Stefano

    256 users

  • a11y-outline

    a11y-outline

    Many screen readers like JAWS or NVDA have shortcuts to bring up a list of landmarks, headings or links. This browser extension provides the same functionality without requiring a screen reader. Just press Ctrl+Shift+7.

    xi

    255 users

  • 定时刷新页面和触发按钮事件

    定时刷新页面和触发按钮事件

    可自定义时间定时刷新当前页面，也可以自定义按钮ID定时触发该按钮点击事件，类似按键精灵效果

    疯狂插件

    255 users

  • Virtual Hosts

    Virtual Hosts

    Apply virtual hosts and overwrite the Hosts header for development purposes.

    Longoon

    255 users

  • Color Picker

    Color Picker

    Pick up amazing color on one click

    Lokdien

    254 users

  • Easy DNS lookup

    Easy DNS lookup

    Utility to do DNS lookups directly to DNS APIs and display the response in the addon.

    wesinator

    254 users

  • Twitter Video Downloader MP3 MP4

    Twitter Video Downloader MP3 MP4

    New Firefox Extension Twitter Video Downloader MP3 MP4 let you easy download any content from Twitter in few steps. Get any Video from Twitter and Download it in MP3, MP4, M4A and other best quality formats. Download video from Twitter TT with FF.

    Youzik YouTube MP3 Converter

    253 users

  • InspectWP - WordPress Theme & Plugin Detector

    InspectWP - WordPress Theme & Plugin Detector

    InspectWP is a website and WordPress analysis tool which includes a WordPress theme and plugin detector.

    InspectWP

    252 users

  • Eye-Able® Audit for WCAG

    Eye-Able® Audit for WCAG

    Check your website for the most common WCAG/ADA errors.

    Web Inclusion GmBH

    252 users

  • Adobe Target VEC Helper

    Adobe Target VEC Helper

    Load your website's desktop and mobile views effortlessly in Adobe Target with the VEC helper extension

    Adobe

    252 users

  • Webcompat.com Reporter

    Webcompat.com Reporter

    Adds a button to allow users to easily report site compatibility issues at webcompat.com, for the active tab.

    Thomas Wisniewski

    251 users

  • Passwork Auto Logon

    Passwork Auto Logon

    Use your Passwork accounts to auto signin on web sites in one click.

    Passwork

    251 users

  • URLRedirector

    URLRedirector

    Automatically redirect specificed urls to new pages.

    Yingcai FENG

    250 users

  • Easy Steam Collection

    Easy Steam Collection

    This will create an easier way to add all of your addons to any stream collection you create in a single click.

    SteamCollectionAddAll

    250 users

  • Alexa RANK

    Alexa RANK

    Alexa Traffic Rank is Alexa Internet's free extension for Mozilla. Alexa Traffic Rank accompanies you as you surf, providing you with Alexa.com data about the sites you visit without interrupting your browsing.

    thoduongluat.com

    250 users

  • Disable CSP for a minute

    Disable CSP for a minute

    Temporarily disables CSP for the current tab's website. Right click on the page, then disable CSP.

    python273

    250 users

  • EyeBankWeb Plugin Adapter

    EyeBankWeb Plugin Adapter

    This add-on allows FireFox to call the locally installed IrisGuard EyeBank APIs using native messaging, giving the user full functionality of all IrisGuard EyeBank APIs calls such as capturing iris images and doing a recognition.

    Firefox user 13251731

    249 users

  • Time Travel

    Time Travel

    Fake the current date and time in JavaScript Date or Intl.DateTimeFormat objects. Time Travel helps you debug time-dependent frontend applications without having to change the system time.

    Christian Pulvermacher

    247 users

  • Viewport

    Viewport

    Displays the current viewport size when resizing the browser window.

    Kameron

    247 users